Until 25 July
It is very possible that Reggie met Donald in Méaulte around this time. In Reggie’s memoirs he recalls :-
We met again by sheer luck, he [Donald] just out from the Hell of Delville Wood, I from Townes Wood ½ a mile away. Those two woods were not comfy places for a quiet stroll.
I think that, in fact, Reggie was not in Townes (actually, Trônes) Wood. However, he had been at High Wood with the 1/4th Seaforth Highlanders. High Wood is only a 1.5 miles away from Delville Wood and 2 miles from Trônes Wood.